Product Description
DIN 125-A round flat washer (form A), 31 x 56 x 4 mm, Article number 125311HV300. Property class / material: steel 300 hv, surface finish zinc plated. Round Flat Washer manufactured to DIN 125. Standard parts to the same standard, property class, dimensions and surface finish are interchangeable between manufacturers; confirm the controlling standard revision, any class-society or application approval, and the mating thread before substitution. Applications: load distribution and locking under bolt heads and nuts in machine building, structural steel, plant maintenance and marine outfitting.
Technical Specifications
- Standard
- DIN 125
- Standard description
- A
- Property class / grade
- HV300
- Class (detailed)
- HV300
- Material hardness
- HV300
- Surface treatment
- Zinc Bright Passivation Fe/Zn P1 (ZPL 3+)
- Surface treatment code
- ZPL
- Diameter
- 30 mm
- Inner diameter
- 31 mm
- Outer diameter
- 56 mm
- Thickness
- 4 mm
- Article number
- 125311HV300
- Category
- Washers / Plain Washers
Standards & Compliance
- Standard
- DIN 125
- Size / Series
- 31 x 56 x 4 mm
- Material
- Steel 300 HV
- HS Code
- 731822
Product Documentation
More from Bufab
Bufab
DIN 125-A Round Flat Washer, Steel 140 HV, 34 x 60 x 5 mm, Plain
125340
Bufab
DIN 125-A Round Flat Washer, Steel 140 HV, 34 x 60 x 5 mm, Zinc Plated
1253401
Bufab
DIN 125-A Round Flat Washer, Steel 140 HV, 34 x 60 x 5 mm, Hot-Dip Galvanised
1253402
Bufab
DIN 125-A Round Flat Washer, Steel 140 HV, 37 x 66 x 5 mm, Plain
125370
Bufab
DIN 125-A Round Flat Washer, Steel 140 HV, 37 x 66 x 5 mm, Zinc Plated
1253701
Bufab
DIN 125-A Round Flat Washer, Steel 200 HV, 37 x 66 x 5 mm, Zinc Plated (1253701HV200)
Bufab
DIN 125-A Round Flat Washer, Steel 140 HV, 37 x 66 x 5 mm, Hot-Dip Galvanised
1253702
Bufab
DIN 125 Round Flat Washer, Steel 300 HV, 37 x 66 x 5 mm, Hot-Dip Galvanised
1253702HV300
Technical guides
Catalogue entry last verified: 2026-09-30. A manufacturer datasheet is attached to this entry — confirm application-critical values against it.
Frequently asked questions
- Where can I buy 125311HV300?
- 125311HV300 can be ordered from cballast.com as a Bufab catalogue item: request a quotation on this page or email sales@cballast.com, and the order ships worldwide.
- What is the manufacturer part number for this Bufab product?
- The manufacturer part number is 125311HV300.
- What is the HS code for 125311HV300?
- The customs tariff (HS) code for 125311HV300 is 731822.
- Who manufactures 125311HV300?
- 125311HV300 is a Bufab product in the C-Parts range.
- Is a datasheet available for 125311HV300?
- Yes — the 125311HV300 datasheet can be viewed and downloaded on this page.
- What is the minimum order quantity for 125311HV300?
- The minimum order quantity is 1.
- Is 125311HV300 available?
- Yes — 125311HV300 is available to order: fulfilment is from supplier stock in cBallast's European network, dispatched directly from the warehouse to the customer, with the exact lead time stated in the quotation (reply within 24 hours).